EP1134414A2 - Serrage de membrane sans déformation - Google Patents

Serrage de membrane sans déformation Download PDF

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Publication number
EP1134414A2
EP1134414A2 EP01105805A EP01105805A EP1134414A2 EP 1134414 A2 EP1134414 A2 EP 1134414A2 EP 01105805 A EP01105805 A EP 01105805A EP 01105805 A EP01105805 A EP 01105805A EP 1134414 A2 EP1134414 A2 EP 1134414A2
Authority
EP
European Patent Office
Prior art keywords
diaphragm
pump
membrane
pump according
elastic component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01105805A
Other languages
German (de)
English (en)
Other versions
EP1134414A3 (fr
EP1134414B1 (fr
Inventor
Eberhard Prof. Dr.-Ing. Schlücker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lewa GmbH
Original Assignee
Lewa GmbH
Lewa Herbert Ott GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lewa GmbH, Lewa Herbert Ott GmbH and Co KG filed Critical Lewa GmbH
Publication of EP1134414A2 publication Critical patent/EP1134414A2/fr
Publication of EP1134414A3 publication Critical patent/EP1134414A3/fr
Application granted granted Critical
Publication of EP1134414B1 publication Critical patent/EP1134414B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible members
    • F04B43/0063—Special features particularities of the flexible members bell-shaped flexible members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/06—Pumps having fluid drive
    • F04B43/067—Pumps having fluid drive the fluid being actuated directly by a piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/04—PTFE [PolyTetraFluorEthylene]

Definitions

  • the invention relates to a diaphragm pump according to the preamble of the claim 1.
  • the membrane as the central Element fulfills the double function as a static seal and displacer in Form of an elastic pumping chamber wall.
  • the static membrane seal is the Basis for the hermetic tightness of diaphragm pumps.
  • the membrane also transfers the oscillating stroke movement of a drive to the one to be conveyed Fluid, which not only stimulates pulsation, but also interaction comes about with the fluid masses in the piping system.
  • the oscillating movement becomes a Drive element via a hydraulic master, which comprises a hydraulic fluid, transferred to the membrane.
  • the hydraulically driven membrane works always pressure balanced and only has to endure deflection stresses.
  • PTFE polytetrafluoroethylene
  • Usual membrane constructions are pure PTFE membranes with a rotationally symmetrical shaft contour or flat contour and PTFE as a protective layer on elastomer membranes.
  • PTFE PTFE
  • the limit for the use of PTFE as a membrane for membrane pumps is currently at a delivery pressure of 350 bar and a temperature of 150 ° C
  • the reasons for these limits are the insufficient cold flow resistance and sealing pressure of the PTFE in the membrane clamping.
  • the components between which the membranes are clamped are, namely pump body and diaphragm drive housing through which Pressure changes in the pump become deformed, resulting in some "breathing" in the fixation results.
  • This term "breathing” denotes one in the operation of the Diaphragm pump, if necessary, periodically decreasing contact pressure between the pump cover and the pump housing in the clamping area the membrane. With increasing pressure and increasing size increases breathing too.
  • the invention is therefore based on the object of a diaphragm pump of the above.
  • Art to make available which the above Disadvantages eliminated and even with higher ones Delivery pressures and higher operating temperature can be used, the membrane clamping should be as breathless as possible or breathing is balanced.
  • the diaphragm pump according to the invention are between the pump cover and Pump housing an insert part that limits the delivery space on the pump cover side and / or a pump housing side delimiting the hydraulic space Insert part provided, the membrane on its peripheral edge between the insert and the pump housing or the pump cover or is clamped between the insert parts.
  • This design has the advantage that the diaphragm pump is also suitable for high pressures, for example above 350 bar, and for higher temperatures, for example above 150 ° C, is suitable because on the one hand the pressure support and the membrane clamping are arranged separately from each other and on the other hand the two insert parts are arranged pressure-balanced so that occurring pressures between Pump cover and pump housing have no significant influence on the diaphragm clamping exercise. This achieves "breathable" membrane clamping. Furthermore, the diaphragm clamping is independent of the size of the pump head.
  • the insert part on the pump cover expediently has a first channel, which with the pump chamber formed by the pump cover insert connects a delivery channel formed in the pump cover, and a second Channel on which the delivery chamber formed by the pump cover-side insert connects with a suction channel formed in the pump cover.
  • the pump cover and pump housing have Fastening means such that the pump cover and the pump housing are connected to one another in a pressure-supported manner and at the same time the two insert parts the membrane between them are pressed against each other.
  • the insert parts are expediently arranged and designed such that they strike directly against each other in a radial area around the membrane clamping.
  • the insert parts form together with the pump cover or the pump housing sealing points.
  • the membrane has a predetermined pressure force clamped between the pump cover and the pump housing in such a way that the pressure in the area of the membrane clamping below the yield point of the Membrane material is.
  • At least one elastic component is provided, which is designed in such a way that there are reductions in the pressure force occurring in the operation of the diaphragm pump in the clamping area of the membrane between the pump cover and the Pump housing compensates elastically.
  • This allows the sealing pressure acts on the membrane, set defined.
  • membranes e.g. made of PTFE particularly important because on the one hand a minimum pressure to maintain the Tightness is necessary and on the other hand limits the maximum permissible pressure is.
  • the two insert parts are opposite the pump cover and the Pump housing sealed in such a way that both sealing points on one and the same diameter are arranged. It is advantageous if the diameter of the two sealing points in relation to the diameter of the clamping point the membrane is equal to or larger to largely balanced pressure ratios to reach on both sides of the inserts. This allows a "breathable" Achieve membrane clamping and a reliable and reliable Achieve membrane seal.
  • This design has the advantage that the diaphragm pump is also suitable for high pressures, for example above 350 bar, and for higher temperatures, for example above 150 ° C, is suitable because deformations of Pump cover and pump housing, which lead to a decrease in the contact pressure lead in the clamping area, are effectively balanced. At the same time may become insufficient under certain operating conditions Cold flow resistance and sealing pressure of the membrane material are compensated.
  • the arrangement according to the invention increases the elasticity of the Membrane in the clamping area, so that the minimum pressure required for tightness in the clamping area of the membrane, even if it is deformed in the clamping area involved components is retained. That provided according to the invention elastic component is used to compensate for fluctuations in the contact pressure in the clamping area of the membrane.
  • the elastic reserves of a membrane package are increased in that the Diaphragm comprises two or more layers of material, at least one elastic Component is arranged between at least two layers.
  • the elastic Component for example, as an elastic intermediate layer or as an elastic one Intermediate ring formed.
  • the elastic component extends over the entire circumference the membrane.
  • the elastic component can be arranged on one side or on both sides of the membrane his.
  • the elastic component comprises a or several elastomer o-rings.
  • the elastic component is used as a lip seal educated.
  • the elastic component is an integral part for simple and quick assembly Part of the membrane.
  • the membrane is expediently made of PTFE or PE or alternatively of one Elastomer with a protective layer made of PTFE.
  • the diaphragm pump shown comprises a diaphragm 10, which separates a delivery chamber 12 from a hydraulic chamber 14.
  • a piston 16 As a drive a piston 16 is provided, which is in operation around a constant piston center position oscillates. The oscillating movement of the piston 16 is controlled by a Hydraulic fluid in the hydraulic chamber 14 and one possibly connected to the membrane 10 Piston 40 transferred to the membrane 10, which has a corresponding oscillates around a central position. That way Fluid sucked in via the inlet valve 18 and a suction channel 20 of the diaphragm pump and discharged via the outlet valve 22 and via a delivery channel 24.
  • the membrane 10 is between a pump cover 26 and a pump housing 28 clamped in a predetermined radial clamping area 30.
  • a pump cover-side insert part delimiting the delivery space 12 provided between the pump cover 26 and the pump housing 28 are arranged and clamp the membrane 10 in the radial clamping area 30.
  • the cover of the diaphragm pump is in one Pressure-absorbing pump cover 26 and the one that forms the membrane clamping insert part 34 on the pump cover side.
  • the housing is the Diaphragm pump in the pressure-receiving pump housing 28 and that the pump housing-side insert part 32 forming the membrane clamping.
  • the pressure is supported between the pump cover 26 and the pump housing 28 separated from the membrane clamping, so that occurring pressures no longer cause deformations or pressure fluctuations in the area of the membrane clamping 30 and thus to "breathing" in the area of the membrane clamping being able to lead.
  • the insert parts 32, 34 radially strike the membrane clamping 30 to each other, which has the advantage of a metal-metal stop around the membrane clamping 30 yields around. Together with the pump components 26, 28 the insert parts 32, 34 form two sealing points arranged radially at the same point 42 out.
  • the sealing points 42 are at least the same or a larger one Diameter arranged as the clamping point 30 of the membrane 10. Die Membrane clamping 30 is thus completely surrounded by pressure and therefore with a suitable position of the sealing point 42 relative to the membrane clamping 30 "breathless".
  • the pump cover insert 34 has a first channel 36 on which the delivery chamber formed by the pump cover insert 34 12 connects to the delivery channel 24 formed in the pump cover 26.
  • the insert part 34 on the pump cover also has a second channel 38, which the delivery chamber 12 formed by the pump cover-side insert part 34 connects the suction channel 20 formed in the pump cover 26.
  • a corresponding recess in the area of the membrane clamping 30 for Inserting the membrane 10 is dimensioned such that only a predetermined one Part of the pressure force acting between the insert parts 32, 34 also on the Membrane 10 in membrane clamping 30 acts.
  • the metallic one requires Sealing point 42 comparatively high surface pressures, which are additionally caused by a crowned contour of the inserts 32, 34 can be supported.
  • the membrane clamping 30 when using PTFE membranes because of Flowability and deformability of the material PTFE only limited surface pressures to.
  • the "breathing" is balanced by the pressure Membrane clamping 30 largely eliminated with the aid of the inserts 32, 34. This enables pressure ranges to be developed that were previously only diaphragm pumps with metal membranes were reserved.
  • the clamping area 30 additionally includes to the membrane 10, an elastic element 46 is arranged, as an example 2 to 5 can be seen.
  • This elastic element 46 is like "breathing" in Clamping area 30 at any time and provides the necessary for the tightness Pressing safe. This means that even with high pressure and temperature loads, which about the permissible loads of known diaphragm pumps go out, a sufficient surface pressure of the membrane clamping 30th guaranteed.
  • the membrane clamping designed according to the invention thus acts as a compensation for elasticity, since in the clamping area 38 of the membrane 10, the elastic component 40 is provided.
  • the lip ring 46 is in one piece formed with the membrane 10 so that when the membrane 10 the elastic component 46 is automatically arranged in the clamping area 30 and is mounted.
  • the elastic component is an elastomer O-ring 48 formed and around the entire circumference in the clamping area 30 arranged.
  • the membrane 10 has two material layers 50, 52, between which an intermediate space 54 is formed, for example in fluid-conducting connection with a diaphragm rupture sensor, not shown stands.
  • the elastic component is in this case an intermediate ring or intermediate layer 56 formed and in the clamping area 30 between the material layers 50, 52 of the Membrane 10 arranged.
  • the membrane 10 is, so to speak "floating" stored.
  • the diaphragm rupture sensor is the intermediate ring or the intermediate layer 56 designed as a fabric.
  • the diaphragm rupture sensor registers the liquid entering the gap 54 through the membrane rupture, which penetrates through the tissue gaps to the membrane rupture sensor.
  • 44 designates the center of the membrane 10, which at the same time is to be regarded as an axis of rotational symmetry.
  • the elastic component can be used to achieve the desired elasticity compensation 46 also in the form of at least one or more axially effective profile rings be trained.
EP01105805A 2000-03-16 2001-03-08 Serrage de membrane sans déformation Expired - Lifetime EP1134414B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10012902A DE10012902B4 (de) 2000-03-16 2000-03-16 Atmungsfreie Membraneinspannung
DE10012902 2000-03-16

Publications (3)

Publication Number Publication Date
EP1134414A2 true EP1134414A2 (fr) 2001-09-19
EP1134414A3 EP1134414A3 (fr) 2002-07-17
EP1134414B1 EP1134414B1 (fr) 2007-01-24

Family

ID=7635005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01105805A Expired - Lifetime EP1134414B1 (fr) 2000-03-16 2001-03-08 Serrage de membrane sans déformation

Country Status (3)

Country Link
US (1) US6464474B2 (fr)
EP (1) EP1134414B1 (fr)
DE (2) DE10012902B4 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2913732A1 (fr) * 2007-03-13 2008-09-19 Milton Roy Europ Sa Pompe de dosage a membrane isolante d'une de ses parois ou flasque d'extremite de la chambre de dosage
CN103429894A (zh) * 2011-04-27 2013-12-04 Ckd株式会社 多层隔膜
WO2018036979A1 (fr) * 2016-08-25 2018-03-01 Siemens Aktiengesellschaft Double membrane pour pompe à poussière
US10914299B2 (en) 2016-01-27 2021-02-09 Dipl. Ing. Ernst Schmitz Gmbh & Co. Kg Maschinen Und Apparatebau Diaphragm pump comprising dust suction from below
US11215174B2 (en) 2016-08-25 2022-01-04 Dipl. Ing. Ernst Schmitz Gmbh & Co. Kg Maschinen Und Apparatebau Diaphragm pump having a porous, arched aluminum filter
US11590440B2 (en) 2016-08-25 2023-02-28 Dipl. Ing. Ernst Schmitz GmbH & Co. KG Maschinen and Apparatebau Production of a porous aluminum filter for a diaphragm pump

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Publication number Priority date Publication date Assignee Title
US6655935B2 (en) * 2002-01-14 2003-12-02 Dresser-Rand Company Gas compressor comprising a double acting piston, an elongate chamber, multiple inlets mounted within heads on both sides of the chamber, and one central outlet
ITMI20021028A1 (it) * 2002-05-14 2003-11-14 Dideco Spa Unita' pompante di fluido in particolare sangue
US6817846B2 (en) 2002-06-13 2004-11-16 Dresser-Rand Company Gas compressor and method with improved valve assemblies
US8454324B2 (en) * 2004-03-18 2013-06-04 Precision Dispensing Systems Limited Pump
JP4526350B2 (ja) * 2004-10-29 2010-08-18 シーケーディ株式会社 薬液供給用ポンプ
DE102004055493B3 (de) * 2004-11-17 2006-04-27 Lewa Herbert Ott Gmbh & Co. Kg Druckunterstützte Membraneinspannung
ITCA20050004A1 (it) * 2005-04-04 2005-07-04 Fernando Erriu Metodo per la costruzione di un modulo idraulico per il recupero dell'energia cinetica dei veicoli e dei treni.
US8197231B2 (en) 2005-07-13 2012-06-12 Purity Solutions Llc Diaphragm pump and related methods
US20140199193A1 (en) * 2007-02-27 2014-07-17 Deka Products Limited Partnership Blood treatment systems and methods
CA2750821A1 (fr) * 2009-01-28 2010-08-05 Albany International Corp. Etoffe industrielle pour production de non tisses et procede pour sa fabrication
US8596648B2 (en) 2010-10-22 2013-12-03 Oshkosh Corporation Pump for vehicle suspension system
DE102011010644A1 (de) * 2011-02-09 2012-08-09 Emitec France S.A.S Fördereinheit für ein Reduktionsmittel
CN102108961B (zh) * 2011-04-09 2012-06-27 杭州大潮石化设备有限公司 可快速更换膜片的液压隔膜式往复泵的液力端结构
CN103097730B (zh) * 2011-04-27 2014-11-26 Ckd株式会社 液体馈送泵及流量控制装置
CN103813814A (zh) * 2011-05-05 2014-05-21 艾克西根特技术有限公司 用于电动输送系统的凝胶联接
US9610392B2 (en) 2012-06-08 2017-04-04 Fresenius Medical Care Holdings, Inc. Medical fluid cassettes and related systems and methods
KR102431007B1 (ko) 2013-05-23 2022-08-09 뉴아이브이 메디컬 코퍼레이션 공기를 검출하고 제거하는 공압적으로 결합된 유체 제어 시스템 및 방법
CN103352839A (zh) * 2013-07-26 2013-10-16 胜瑞兰工业设备（苏州）有限公司 一种开槽金属薄片引导隔膜泄漏装置
CN103362793A (zh) * 2013-07-26 2013-10-23 胜瑞兰工业设备（苏州）有限公司 一种编织丝网引导隔膜泄漏装置
CN103423149B (zh) * 2013-08-05 2015-08-19 宝鸡航天动力泵业有限公司 隔膜泵膜片快换式压紧机构
US9890024B2 (en) 2016-04-08 2018-02-13 Oshkosh Corporation Leveling system for lift device
CN108980031A (zh) * 2018-09-26 2018-12-11 天津包博特密封科技有限公司 高强度往复式液压隔膜泵用隔膜
DE102019109283A1 (de) * 2019-04-09 2020-10-15 Prominent Gmbh Membranbruchüberwachung

Citations (7)

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Publication number Priority date Publication date Assignee Title
FR1373780A (fr) * 1963-08-19 1964-10-02 Perfectionnements aux pompes à diaphragme
DE1926306U (de) * 1964-08-10 1965-11-04 Compresseurs A Membrane Corbli Membranverdichter oder pumpe.
DE1503429A1 (de) * 1963-04-26 1969-04-03 Andreas Hofer Hochdruck Appbau Dichtungsring fuer Hoechstdruck-Zusatzverdichter mit Membranbetaetigung
DE2620228A1 (de) * 1976-05-07 1977-11-10 Bran & Luebbe Kolbenmembranpumpe
EP0320091A1 (fr) * 1987-11-13 1989-06-14 Plf Acquisition Subsidiary Inc. Dispositif et procédé pour détecter les défaillances de membrane de pompes alternatives
DE19535314C1 (de) * 1995-09-22 1996-11-28 Ott Kg Lewa Hochdruckmembranpumpe mit biegefreiem Membrandeckel
US5860793A (en) * 1995-12-01 1999-01-19 Pulsafeeder, Inc. Diaphragm metering pump with push to prime air bleeder valve

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US2764097A (en) * 1953-03-04 1956-09-25 Lindsay H Browne Pump
US3000320A (en) * 1957-07-18 1961-09-19 Ring Sandiford Pump
US3093086A (en) * 1960-04-12 1963-06-11 Westinghouse Electric Corp Diaphragm assemblage
US3338171A (en) * 1965-09-15 1967-08-29 Du Pont Pneumatically operable diaphragm pumps
US3387566A (en) * 1966-01-10 1968-06-11 Ici Australia Ltd Fluid operated prime mover
US3386388A (en) * 1966-06-22 1968-06-04 Rosenberg David Hydraulically actuated pump
US4837068A (en) * 1987-01-27 1989-06-06 The Foxboro Company Compliant diaphragm material
US5131226A (en) * 1987-07-09 1992-07-21 Milad Limited Partnership Variable volume reservoir and method for its use
DE4143371C2 (de) * 1991-11-08 1994-01-27 Almatec Tech Innovationen Gmbh Membran für eine Membranpumpe

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1503429A1 (de) * 1963-04-26 1969-04-03 Andreas Hofer Hochdruck Appbau Dichtungsring fuer Hoechstdruck-Zusatzverdichter mit Membranbetaetigung
FR1373780A (fr) * 1963-08-19 1964-10-02 Perfectionnements aux pompes à diaphragme
DE1926306U (de) * 1964-08-10 1965-11-04 Compresseurs A Membrane Corbli Membranverdichter oder pumpe.
DE2620228A1 (de) * 1976-05-07 1977-11-10 Bran & Luebbe Kolbenmembranpumpe
EP0320091A1 (fr) * 1987-11-13 1989-06-14 Plf Acquisition Subsidiary Inc. Dispositif et procédé pour détecter les défaillances de membrane de pompes alternatives
DE19535314C1 (de) * 1995-09-22 1996-11-28 Ott Kg Lewa Hochdruckmembranpumpe mit biegefreiem Membrandeckel
US5860793A (en) * 1995-12-01 1999-01-19 Pulsafeeder, Inc. Diaphragm metering pump with push to prime air bleeder valve

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2913732A1 (fr) * 2007-03-13 2008-09-19 Milton Roy Europ Sa Pompe de dosage a membrane isolante d'une de ses parois ou flasque d'extremite de la chambre de dosage
US7836814B2 (en) 2007-03-13 2010-11-23 Milton Roy Europe Metering pump with a protected pump chamber
CN103429894A (zh) * 2011-04-27 2013-12-04 Ckd株式会社 多层隔膜
US10914299B2 (en) 2016-01-27 2021-02-09 Dipl. Ing. Ernst Schmitz Gmbh & Co. Kg Maschinen Und Apparatebau Diaphragm pump comprising dust suction from below
WO2018036979A1 (fr) * 2016-08-25 2018-03-01 Siemens Aktiengesellschaft Double membrane pour pompe à poussière
US10781807B2 (en) 2016-08-25 2020-09-22 Dipl. Ing. Ernst Schmitz Gmbh & Co. Kg Maschinen Und Apparatebau Double membrane for a dust pump
US11215174B2 (en) 2016-08-25 2022-01-04 Dipl. Ing. Ernst Schmitz Gmbh & Co. Kg Maschinen Und Apparatebau Diaphragm pump having a porous, arched aluminum filter
US11590440B2 (en) 2016-08-25 2023-02-28 Dipl. Ing. Ernst Schmitz GmbH & Co. KG Maschinen and Apparatebau Production of a porous aluminum filter for a diaphragm pump

Also Published As

Publication number Publication date
DE50111921D1 (de) 2007-03-15
EP1134414A3 (fr) 2002-07-17
EP1134414B1 (fr) 2007-01-24
DE10012902A1 (de) 2001-09-27
US20010038796A1 (en) 2001-11-08
US6464474B2 (en) 2002-10-15
DE10012902B4 (de) 2004-02-05

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